Mixed-Mode (I+II) propagation of Delamination Fatigue Cracks in Unidirectional Graphite/Epoxy Laminates.
Bibliographic Information
- Other Title
-
- 炭素繊維強化エポキシ積層板の混合モードI+II繰返し荷重による層間疲労き裂進展挙動
- タンソ センイ キョウカ エポキシ セキソウバン ノ コンゴウ モード 1 2 クリカエシ カジュウ ニ ヨル ソウ カン ヒロウ キレツ シンテン キョドウ
Search this article
Description
Mixed-mode propagation behavior of interlaminar fatigue cracks was studied with unidirectional graphite/epoxy laminates. T800H/# 3631. Mixed-mode fatigue tests were conducted by the mixed-mode bending method under a stress ratio of R=0.2. The mixed-mode ratio, GI/GII, was 0.030, 0.19, 0.57 and 1.37. When the crack propagation rate da/dN, was correlated to the maximum value of the total energy release rate, Gmax, the propagation rate increased as the GI/GII value increased. For each mixed-mode ratio, the crack propagation rate was given by a power function of the maximum value of the energy release rate in the region of rates above 10-9m/cycle. The exponent of the power function decreased as the GI/GII value decreased. Below da/dN=10-9m/cycle, there exists the threshold for fatigue crack propagation. At the threshold, the relation between the mode I and mode II components of the maximum energy release rate, GImax and GIImaxth, is given by the following equation : GImax/GImaxth+GIImax/GIImaxth=1, where GImaxth and GIImaxth are the threshold values of the maximum energy release rate for pure mode I and pure mode II loadings.
Journal
-
- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
-
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 65 (636), 1676-1683, 1999
The Japan Society of Mechanical Engineers
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390001204448259712
-
- NII Article ID
- 110002375074
-
- NII Book ID
- AN0018742X
-
- ISSN
- 18848338
- 03875008
-
- NDL BIB ID
- 4837891
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed